Forum log me off

Hello the forum keeps logging me off every time i dont use it every 10 minutes. This is extremely annoying cuz i have other paes like games and stuff where i am keeped logged in at same time so dont blame my connection. Also if connection dont work the paes wont show up at all. Here if i have forum tab open and gop lays a game and come bak ihave to log in again. Is this a common problem?